|
|||||
|
|
| 邢台地区地壳各向异性特征初步研究 | |
| 引用本文： | 吴鹏,李相平,高原,石玉涛,刘立申.邢台地区地壳各向异性特征初步研究[J].地震,2017,37(1):73-81. |
| 作者姓名： | 吴鹏 李相平 高原 石玉涛 刘立申 |
| 作者单位： | 1.河北省地震局邯郸中心台, 河北 邯郸 056001; 2.中国地震局地震预测研究所, 北京 100036; 3.河北省地震局红山基准台, 河北 邢台 054000 |
| 基金项目： | 河北省地震局地震科技星火计划项目(DZ20150423074)与河北省重点地区壳幔结构及地震监测预报关键技术研究(13275407D)联合资助 |
| 摘 要： | 邢台地区处于华北平原地震带中南段, 是华北地区活跃的地震活动区。 本研究根据该地区的构造环境, 采用SAM方法研究地壳各向异性特征, 通过对邢台地区台站的数字波形进行分析, 初步得到邢台地区的剪切波分裂参数, 该地区的快剪切波平均偏振方向为73.9°±40.2°, 慢剪切波平均时间延迟为(2.74±1.54) ms/km。 结果表明, 快剪切波平均偏振方向与华北区域最大主压应力场方向基本一致, 但是受到局部断裂的制约, 部分台站下方的快剪切波的偏振方向显示为NWW方向。 |
| 关 键 词： | 地壳各向异性 剪切波分裂 邢台地区 |
| 收稿时间： | 2015-12-07 |
Prelimitary Study of Crustal Anisotropy in the Xingtai Region,Hebei Province |
|
| WU Peng,LI Xiang-ping,GAO Yuan,SHI Yu-tao,LIU Li-shen.Prelimitary Study of Crustal Anisotropy in the Xingtai Region,Hebei Province[J].Earthquake,2017,37(1):73-81. | |
| Authors: | WU Peng LI Xiang-ping GAO Yuan SHI Yu-tao LIU Li-shen |
| Institution: | 1.Central Station of Handan, Earthquake Administration of Hebei Province, Handan 056001, China; 2. Institute of Earthquake Science, CEA, Beijing 100036, China; 3. Earthquake Station of Hongshan, Earthquake Administration of Hebei Province, Xingtai 054000, China |
| Abstract: | Xingtai region is located in the south of north China plain belt, and the geological structure is complicated in this area. Based on the SAM method and data (2001-1—2014-12) from Hebei Seismic Network, the seismic anisotropy in Xingtai region is obtained. The average polarization of fast shear-wave is 73.9°±40.2°, and the average time delay of slow shear-wave is (2.74±1.54) ms/km. It is shown that the avaerge polarization of fast shear-wave is consistent with the regional maximum horizontal principal compressional stress. But because of the local faults, the polarization of fast shear-wave of some sites are NWW, more data is needed to explain the phenomenon. |
| Keywords: | Shear-wave splitting Fast shear-wave splitting polarition Slow shear-wave splitting Xingtai region |
| 本文献已被 CNKI 等数据库收录！ | |
| 点击此处可从《地震》浏览原始摘要信息 | |
| 点击此处可从《地震》下载免费的PDF全文 | |